Mounting rail

ABSTRACT

A mounting rail ( 1 ) for embedding in a curable construction material ( 3 ), e.g. concrete ( 4 ), having a support profile ( 2 ), such that the support profile ( 2 ) has a connection on the outer side thereof and via an embedding region ( 5 ) thereof to the curable construction material ( 3 ). It should be possible to easily remove the construction material ( 3 ) from the mounting rail ( 1 ) outside of the embedding region ( 5 ) of the mounting rail ( 1 ) following hardening of the construction material ( 3 ). The support profile ( 2 ) having a non-stick coating ( 7 ) and/or a non-stick surface outside of the embedding region ( 5 ), at least over a part thereof.

This claims the benefit of German Patent Application DE 10 2010 029046.7, filed May 18, 2010 and hereby incorporated by reference herein.

The present invention relates to a mounting rail, to a method forembedding a mounting rail, and to a structure.

BACKGROUND

In structural engineering, anchor rails or mounting rails are poured orembedded into concrete, such that only an upper side and/or an outerregion of a support profile of the mounting rail is freely accessible.The mounting rail conducts forces, which are applied to the same bymeans of contact and/or a connection, to an embedding region with thesurrounding concrete and into said concrete. The mounting rail in thiscase has, in general, rearward anchors. For this case in general, forceswhich engage with the mounting rail are substantially conducted into theconcrete by the support profile and the anchors.

The anchor rails must be inserted into a formwork prior to the pouringof the concrete and/or to the embedding of the rails into the concrete,the same being the curable material. In order to prevent the concretefrom penetrating the outer region of the support profile duringplacement and the subsequent hardening of the concrete, an internalspace of the mounting rail is temporarily filled with a filler material,or a slit and/or groove on an internal space is covered. The mountingrail is embedded in the concrete on the outer embedding region thereof,wherein outside of the embedding region, no concrete should come intocontact with the mounting rail on the outer region thereof.Particularly, no concrete and/or no laitance should come into contactwith the region of an internal space which is enclosed by a supportprofile, because ultimately as a result, means for the attachment ofstructural attachments, for example a hook bolt, can then no longer beappropriately inserted into the internal space. However, the fillermaterial frequently does not fit perfectly and/or the shape thereof isaltered by external influences, such that cavities nevertheless formbetween the rail and/or the support profile of the mounting rail and thefiller material, and in this way, liquid laitance can penetrate intothese cavities and subsequently harden. Upon hardening, the laitance isbonded to the support profile and cannot be removed without greatdifficulty and the use of auxiliary means. Once the filler material isremoved, the hardened laitance consequently remains as a residue on thesupport profile and thereby negatively influences the function of themounting rail. This is because the hook bolt, for example, can no longerbe inserted in the rail with a perfect fit, or can only be inserted withvery high effort. The hardened laitance or the hardened mortar can thenonly be removed from the outer region of the support profile withincreased effort, for example by means of hammer strikes. This isassociated with additional, cost-intensive and labor-intensive effort.In addition, the same can result in the damage of, for example, ananti-corrosion layer of zinc on the support profile, with the formationof rust as a consequence.

A mounting rail is known from DE 101 25 970 A, the same having two halfrails which run in the longitudinal direction and which are connected toeach other. The half rails in this case are connected to each other bymeans of connectors, and the connectors are preferably designed as clampconnectors. The mounting rail is intended to be embedded in concrete ina roof or a wall of a building, and the mounting rail is filled with afiller material for the purpose of preventing concrete from penetratinginto the same.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a method forembedding a mounting rail, and providing a structure, wherein a curableconstruction material, particularly concrete or laitance, can be easilyremoved from the mounting rail outside of an embedding area of themounting rail once the concrete has hardened.

The present invention provides a mounting rail for embedding in acurable construction material, e.g. concrete, having a support profile,such that the support profile has a connection to the curableconstruction material on the outer side thereof via an embedding region,and the support profile has a non-stick coating and/or a non-sticksurface outside the embedding region and at least on a part thereof Dueto the application of a non-stick coating, or the production of anon-stick surface outside of the embedding region, the hardenedconstruction material can be easily removed again from the supportprofile following hardening of the laitance or the mortar as the curableconstruction material on the mounting rail, particularly on the supportprofile. In this way, damage to the mounting rail can be prevented in anadvantageous manner, and the effort required to remove the curableconstruction material can be reduced. In this way, it is also possibleto attach means for the attachment of structural attachments to themounting rail in a simple manner following hardening of the constructionmaterial.

In an additional embodiment, the non-stick coating is formed by a moldrelease agent.

In a complementary variant, the support profile has the non-stickcoating and/or the non-stick surface on at least part of an outer regionthereof.

The support profile is particularly provided with the non-stick coatingand/or the non-stick surface over the entire surface thereof outside ofthe embedding region.

In a further embodiment, a filler material, e.g. at least one fillerbody, is arranged inside an internal space enclosed by the supportprofile.

Advantageously, the at least one filler body is an elastic foam body.

In an additional embodiment, the filler material is a curable foam, andis inserted by means of insertion and subsequent foaming of the foammaterial in an internal space of the support profile.

In a complementary embodiment, the filler material has a non-stickcoating and/or a non-stick surface on the outer side thereof, and atleast over a part thereof, and particularly over the entire surfacethereof. In this way, hardened construction material can be easilyremoved from the filler material in an advantageous manner, and as such,the removal of the filler material from the internal space can besimplified.

The non-stick coating is preferably PTFE and/or wax and/or oil and/orgrease and/or silicone, particularly cross-linked silicone polymer.

In one variant, the material of the non-stick coating has amicrostructured surface demonstrating the lotus effect, and/or thenon-stick coating is a nanocoating.

The non-stick coating of the support profile is advantageously made upof the same material as the support profile, and/or the non-sticksurface of the filler material is made up of the same material as thefiller material, and the non-stick surface is a microstructured surfacedemonstrating the lotus effect. The support profile is producedinitially with the non-stick surface, such that a non-stick surface isavailable over a long time on the outer region and/or outside theembedding region. In this way, it is not necessary to re-apply anon-stick coating prior to every embedding of the mounting rail inconcrete.

In a further embodiment, the support profile has a substantiallyC-shaped figure in the cross section thereof, and/or the mounting railis designed with at least one means for the attachment of at least onestructural attachment on the mounting rail, and preferably said meanshas at least one bolt and/or screw, e.g. a hook bolt, a hammer-headmachine screw, a hammer-head bolt, a groove, a slit, or an internalspace which is enclosed by the support profile and has an opening as thegroove or slit, for the purpose of the attachment of structuralattachments.

Particularly, the mounting rail has at least one, and preferablymultiple, anchors for embedding in the curable construction material,and preferably the at least one anchor is attached to the supportprofile.

In a further embodiment, the mounting rail, particularly the supportprofile, is made at least partially, and preferably entirely, of metal,e.g. iron, steel, or aluminum, and/or of plastic.

A method according to the invention for embedding a mounting rail,particularly a mounting rail described in this patent protectionapplication, in a curable construction material, e.g. concrete ormortar, having the following steps: arrangement of the mounting railwith a support profile at the embedding position; introduction of acurable construction material into a space bounded by a formwork, suchthat the support profile comes into contact, and preferably directcontract, with the curable construction material via an embedding regionthereof; hardening of the construction material, wherein a non-stickcoating is applied to the support profile outside of the embeddingregion of the support profile prior to the introduction of the curableconstruction material.

In a complementary variant, a filler material, e.g. at least one fillerbody, is arranged in an internal space enclosed by the support profileprior to the introduction of the curable construction material, and thefiller material is coated with a non-stick coating prior to thearrangement thereof in the internal space.

In a further variant, the non-stick coating is PTFE and/or wax and/oroil and/or grease, and/or silicone, particularly cross-linked siliconepolymer.

In a further embodiment, the non-stick coating is sprayed, painted, orapplied as microcapsules onto the support profile and/or onto the fillermaterial.

In a further embodiment, the curable construction material is mortar oran aggregate, preferably a mineral aggregate, e.g. gravel or sand, witha binder agent, e.g. cement or bitumen.

A structure according to the invention, or components of said structure,e.g. a wall or a roof, made of a curable construction material with amounting rail embedded in the construction material, wherein themounting rail is designed as a mounting rail described in the patentprotection application, and/or the structure, or the components of saidstructure, is produced according to a method described in this patentprotection application.

BRIEF DESCRIPTION OF THE DRAWINGS

One embodiment of the invention is explained in detail below withreference to the attached illustrations. The included illustrations are:

FIG. 1 a cross section of a mounting rail embedded in the concrete,

FIG. 2 a cross section of a filler body for the mounting rail accordingto FIG. 1, and

FIG. 3 a side view of the mounting rail according to FIG. 1.

DETAILED DESCRIPTION

In FIGS. 1 and 3, a mounting rail 1 or an anchor rail 1 is illustrated.The mounting rail 1 is a support profile 2 made of metal, particularlysteel or aluminum. An anchor 13 is attached to a lower leg of thesupport profile 2 which is oriented horizontally in FIG. 1. In additionto the horizontally oriented leg of the support profile 2 describedabove, the support profile 2 also has two vertical legs which areoriented vertically. Two horizontally oriented strip legs 17 are presenton the upper end of the vertically oriented legs of the support profile2. The strip legs 17 of the support profile 2 have an undercut on theunderside thereof. The lower legs, oriented substantially horizontally,and each of the two vertical and inclined legs of the support profile 2are in direct contact with concrete 4 as the curable constructionmaterial 3 on the outer side thereof, wherein said curable constructionmaterial 3 is, for example, the wall of a structure. As such, these legsprovide the embedding region 5 of the support profile 2 on the outerside thereof. Both of the strip legs 17 are not in contact with theconcrete 5 on an upper side 18 thereof, i.e. said strip legs 17 form anouter region 6 of the support profile 2. The outer region 6 is alsoformed by the remaining legs of the support profile 2 over an internalspace 12. The support profile 2 encloses the internal space 12. Theinternal space 12 has an opening 11 in the form of a slit 9 or a groove10. A hammer-head machine screw or hook bolt can be fixed in theinternal space 12 as a means for the attachment of structuralattachments, which are not illustrated. In this manner, it is possiblefor the mounting rail 1 to bear a load. The anchors 13 are likewiseembedded in the concrete 4 and function to allow the mounting rail 1 tobear correspondingly large forces and/or loads.

The mounting rail 1 is inserted into a space bounded by a formwork priorto the introduction of the concrete. In this case, filler material 14 isinserted into the internal space 12 as a filler body 15 prior to theintroduction of the concrete (FIG. 2). The filler body 15 therebyconstitutes an elastic foam body 16, the geometry of which correspondsto the geometry of the internal space 12 in a cross sectionperpendicular to a longitudinal axis 8 of the mounting rail 1. In thisway, the filler body 15 can substantially and entirely fill in theinternal space 12, and the filler body 15 ends at the upper side 18 ofthe strip legs 17 of the support profile 2.

The support profile 2 has a non-stick coating 7 outside of the embeddingregion 5, i.e. on the outer region 6 thereof. The non-stick coating canbe a mold release agent, e.g. oil or PTFE. In addition, the surface ofthe filler body 15 is also provided with the non-stick coating 7. Verysmall cavities and/or spaces can be present between the outer region 6of the support profile 2 and the filler material 15. Laitance or mortarcan penetrate into these cavities, the same hardening after the concreteis introduced, and then consequently bind to the support profile 2 andthe filler body 15. Due to the application of the non-stick coating 7onto the support profile 2 and the filler body 15, this hardenedlaitance can be very easily removed with little mechanical effort fromthe support profile 2 and from the filler body 15 after the laitance hashardened and the filler body 15 has been subsequently removed from theinternal space 12 of the support profile 2. This is necessary so thatthe hook bolt can be inserted into the opening 11 of the internal space12. The application of the non-stick coating 7 onto the filler body 15has the advantage that the laitance can be removed from the filler body15 with little effort after the laitance has hardened on the filler body15 (which is a type of concrete preserved with filler material).Consequently, oil is sprayed into the outer region 6 of the supportprofile 2 as a mold release agent prior to the introduction of theconcrete and the insertion of the filler body 15 into the internal space12 of the support profile 2. Likewise, the mold release agent is alsosprayed onto the filler body 15—a foam body 16—prior to the introductionof the concrete. In this way, the bond between the curable constructionmaterial 3, particularly laitance, and the support profile 2 as well asthe filler body 15, can be reduced in an advantageous manner asdescribed above, such that the residue of the construction material 3can be easily removed from the support profile 2 and from the fillerbody 15 following hardening of the construction material 3.

Unlike in the embodiment illustrated in FIGS. 1 and 2, the supportprofile 2 can be constructed with a non-stick surface on the outerregion 6 thereof, instead of having a non-stick coating 7. In a similarmanner, the filler body 15 can also have the non-stick surface on theouter side thereof. The non-stick surface in this case provides amicrostructured surface demonstrating the lotus effect, and consequentlyis a nanosurface, for example. Due to the microstructured surface, thebond between the construction material 3 and the support profile 2 onthe outer region 6 thereof, as well as on the surface of the filler body15, is reduced, such that the construction material 3 can be easilyremoved from the outside region 6 and from the filler body 15 followinghardening of the same, in a similar manner as that described in theembodiment above. Due to the long-lasting microstructured surface as thenon-stick surface, it becomes no longer necessary to spray the non-stickcoating 7 onto the outer region 6 and onto the surface of the fillerbody 15 prior to every pouring of the concrete 4.

Overall, substantial advantages are associated with mounting rails 1according to the invention. Due to the non-stick coating 7 on the outerregion 6 of the support profile 2 and on the surface of the filler body15, the bond between the construction material 3, particularly in theform of concrete or mortar, on the support profile 2 and the filler body15 is reduced, such that as a result, residues of the constructionmaterial 3 can be easily removed from the support profile 2 and from thefiller body 15 following hardening of the construction material 3. Assuch, it is possible to easily reproduce the originally present surfaceand/or shape of the internal space 12 of the support profile 2, suchthat a hook bolt can be inserted again without any problem into theinternal space 12.

What is claimed is:
 1. A mounting rail for embedding into a curableconstruction material comprising: a support profile having a connectionto the curable construction material on an outer side via an embeddingregion, the support profile having a first surface outside of theembedding region, the first surface having a non-stick coating at leastpartially covering the first surface and/or being at least partially anon-stick surface.
 2. The mounting rail as recited in claim 1 whereinthe support profile is entirely covered by the non-stick coating and/orthe non-stick surface outside the embedding region.
 3. The mounting railas recited in claim 1 further comprising a filler material arrangedinside an internal space enclosed by the support profile.
 4. Themounting rail as recited in claim 3 wherein the filler material is afiller body.
 5. The mounting rail as recited in claim 3 wherein thefiller material has a non-stick coating and/or a non-stick surfacecovering at least a part thereof.
 6. The mounting rail as recited inclaim 5 wherein the non-stick coating and/or non-stick surface entirelycovers the filler material.
 7. The mounting rail as recited in claim 1wherein the first surface has a non-stick coating made of PTFE and/orwax and/or oil and/or grease and/or silicone.
 8. The mounting rail asrecited in claim 1 wherein the first surface is a non-stick coating witha microstructured surface demonstrating the lotus effect and/or ananocoating.
 9. The mounting rail as recited in claim 1 the firstsurface is a non-stick surface of the support profile made of the samematerial as the support profile and the non-stick surface is amicrostructured surface demonstrating the lotus effect.
 10. The mountingrail as recited in claim 5 wherein the non-stick surface of the fillermaterial is made of the same material as the filler material, and thenon-stick surface of the filler material is a microstructured surfacedemonstrating the lotus effect.
 11. The mounting rail as recited inclaim 1 wherein the support profile has a substantially C-shapedcross-section defining an internal space having an opening as a grooveor slit for at least one attachment for at least one structuralattachment on the mounting rail, the attachment being at least one boltand/or at least one screw.
 12. The mounting rail as recited in claim 1further comprising at least one anchor for embedding in the curableconstruction material.
 13. The mounting rail as recited in claim 12wherein the at least one anchor includes a plurality of anchors.
 14. Themounting rail as recited in claim 12 wherein the at least one anchor isattached to the support profile.
 15. The mounting rail as recited inclaim 1 wherein the mounting rail is partly made of metal, and/or ismade of plastic.
 16. A method for embedding a mounting rail in a curableconstruction material comprising the following steps: arranging themounting rail with a support profile at an embedding position;introducing a curable construction material into a space bounded by aformwork so that the support profile comes into contact with the curableconstruction material via an embedding region thereof; hardening theconstruction material; and applying a non-stick coating to the supportprofile outside the embedding region prior to the introducing step. 17.The method as recited in claim 17 further comprising arranging a fillermaterial in an internal space enclosed by the support profile prior tothe introduction of the curable construction material, and the fillermaterial is coated with a non-stick coating prior to the arrangement ofthe same in the internal space.
 18. The method as recited in claim 16wherein the non-stick coating is PTFE and/or wax and/or oil and/orgrease and/or silicone.
 19. The method as recited in claim 16 whereinthe non-stick coating is sprayed, painted, or applied in the form ofmicrocapsules onto the support profile or a filler material.
 20. Astructure or structure part comprising: a curable construction material;and a mounting rail embedded in the construction material, the mountingrail as recited in claim 1.